Skeining



Jan. 20, 1931. R T 1,789,702

sxmmm Filed Ray 2}. 1928- 2 Sheets-Sheet 1 8 127 B6 B3 52 B B5%;WMENTOR 4/m Jan. 20, I931. J. FROMONOT SKEINING Filed May 23. 1922 2 sheets-sheet 2.

INVENTOR dW/AWORNEY Patented Jan. 1,931

' UNITED STATES PATENT, OFFICE man rnouono'r, or LE muss DE ROUSSILLON, rmcn, Assnmon, BY misnn AS- sr'emmurs, ro'nu rom- BAYON column, or mew YORK, 11. Y., a coarona'rion OF DELAWARE Y SKEINII TG Application filed Iay 28, 1928, serial xo. 219,888, and in France lay 24, 1827;

In the winding of threads into hanks, the name of leases is given to the diamond-shaped openings formed by the threads of the hank Y when the latter is spread on the reel on which 6 it has been formed; it is through these leases that a thread is passed (tie-up or bank in order to avoid variations in the hygro metric conditions during the duration of the whole operation of formation of the hanks.

It is, in fact, frequently observed that the diamonds are not correctly formed; they override each other so that, in tying up, the work-girl is compelled to create with her fin- I ger the passage through the threads at the risk of dama ing the thread or of performing a wrong distribution of the silk, that is, in allotting toone side of the diamond, for ex- .ample, the silk which should be alloted to the other side.

' This maybe inconvenient at the moment of unwinding and particularly in the case when these hanks must be treated for hankdyeing or for sizing. Moreover, it often hapns that on the two external edges ofthe ank there exist two ridges arising fromthe fact that the apices of the diamonds on these external edges donot all coincide with the ,webs'ofthe reel, so that these apices, being 315, without support, follow the thread in its movement during the formation of the hank and come back towards the inside of the hank forming ridges. These threads which have in this. manner a reduced tension are fallen.

edges of the hanks, as has been described,' should be completely prevented, and also that 1 the pattern made by the threads of thehan k should be identical on all the :facesof the reel,

as far as concerns the number and the arrangement of the diamonds formed. The theoretical stody of the problem which I have undertaken for the purpose of obtaining hanks in the state of perfection so defined has shownthat, if m is the number of dia monds along the rim eter of the "bank (and therefore vertical y opposite) if n is the number of diamonds contaigled in the width of the hank, and if Zis the n mber of webs of the 1 reel, then it is necessar that m=l; a being a whole number and m and 2n prime to each 7 other, which requires m to be odd.

Acoordin to the present invention, hanks without fal en threads are'obtained having leases-perfectly neat, identically dis osed on all the faces of the reel, vby forming t e hanks so that the apices of the diamonds on the external edges of the hank are in odd'numbers and are allformed on the webs of the reel and on these webs only. In other words, there is in the direction of the perimeter of the bank an odd number of diamonds which is equal to thenumber of the webs of the reel, and on each web of the reel there is in thewidth of the hank a whole number of diamonds, the lateral apices of which rest u on the web.

Referring to the appended rawing:

Figures 1, 2, 3 and 4 show as examples the developments of several hanks for which different values ofm and n have been chosen.

Figures 5 and 6 represent diagrammatically in front and side elevation an apparatus for the preparation of hanks by, the process according to the invention. v

In Figure 1 the hank has been obtained according to the present invention. The selected values are: m=l=3, n=7. It is seen that all the apices A", A A, A, etc. of the diamonds on the external ed s of the bank rest on the webs I, II, III of t e reel and that m ill on each of these webs there is a whole number of diamonds (apices A, A 1, A 2) In Figure 2 the hankhas been again obtained in accordance with the present invention, the selected values being m=l= 5, n=7. The same fact is observed. This manner of forming the hank is particularly interesting in practice, the number of tie-up threads (5) and the number of leases (7) giving a remarkable conformation of the hank.

In Figure 3, on the other hand, a hank formation is represented in which contrarily to the present invention the number m, taken equal to the number Z of webs-of the reel is even, m=l=4 (case arising frequently in former practice) and where the-number of leases is 7.

It is seen on Figure 3 that there is not a I whole number of diamonds in the width of the leases decrease from the central portion of the hank towardsthe edges, as shown on Figure 4. It is advantageous fortying up.

easily that all the leases should have identical dimensions, and the attainment of this desideratum by adopting a uniform speed for the alternative motion of the thread-guiding device is a secondary feature of the present invention. 1 For performing the preparation of hanks v according to the present invention, it is neces sary for the reels to have an odd number of webs, and the ratio of the speeds of the reel (in revolutions per minute) and "of the thread-guiding device (in number of double runs per minute) will be selectedto be such that the conditions above indicated are fulfilledi It is easyto ascertain by calculation that if c is the-number of double runs of the thread-guidin device per minute and g the speed of rotation of the Whee1,in revolutions .per minute, one has in the case considered in the present invention wherem and 2n are prime to each other sin- In Figures 5 and 6, 1 is: areel havin an odd number of webs, (5,for example), if it is desired to prepare hanks according to the scheme of Figure 2,; 2 is the thread-guidin device, 3 is thecontrolling device for the latter. This arrangementcomprises a helicoidal cam, so as to obtain a uniform motion. The

.must have webs.

weaves interdependence of the motion of the reel and of that of the thread-guiding device is obtained by means of a gear-train 4, so that the speedratiomay be given the required value -for the preparation of the skeins, in

accordance wi the present invention.

In the case of the drawing, Figure 2, one

The required number of movable webs is provided on the reel, for example, two mov able webs 5 6 for a reel with five websand these movable wehs areconnectcd to each other by any suitable means, for example, by

a sleeve 7,.slidable on the axle 8 of the reel and connected to the movable webs by bars 9.

lclaim:..,.

l. A process for winding hanks of'textile fibres without fallen threads and having substantially perfectly defined leases disposed identically on all the faces of the reel comprising forming the hanks having an odd number of the diamond apices onth'e external edges of the hank.

2. A process of winding hanks-of textile fibres without fallen threads and having sub-1 stantially perfectly defined leases disposed identically on all the faces of the reel comprising forming in the direction'ol the perimeter'of the hank an odd number of diamonds equal to the number of webs of vthe reel and on each web ofthe reel a whole munber of diamonds, the lateral apices ofwhio'h rest upon the web.

3, An apparatus for winding haul s ef I textile fibres without fallen threads and having substantially perfectly defined leases comprising a reel having an odd number of webs, a thread-guidingdevice, means to ro--. tate said reel-and impart, motion to said thread her of ouble runs-per minute of the thread guiding device to g, the speed of the reel in IBVOlIllZlGIl per minute, wherein is the number ofdiamonds along the perimeter of the hank, n is the'number of diamonds contain in the width of the hanlnis G v e icle so that the ratio of 0, the nuin a. An apparatus for winding hanksof textile fibreswitliout'fallen threads and having substantially perfectly defined leases comprising a reel havin an odd number of webs, a (plurality of said "*wehs beingmovable, an means connecting said state 5. An as irin for winding b nks of textile fibres without fallen threads and hav g ing substantially 'perfectlyv definedleases comprisin "a Ten havin an tad-number or a ura'l'ity of said 1 webs tang-mow.

able, means connecting said movable wehs, said means including a movable sleeve disposed on the axle of said reel and a rod connecting each of said movable webs to said sleeve.

6. An article of manufacture comprising a hank of textile fibres having an odd number of vertically opposite apices along the perimeter of the hank and being prime with the number of leases.

In testimony whereof, I have afiixed my signature to this specification.

- JEAN FROMONOT. 

